4. Battery holder and battery chamber （電池座和電池室）

(1)Design a battery chamber which the electric is not connected when a battery was reversed. Describe the correct loading direction of battery surely and indelibly on a battery chamber.

  （設(shè)計電池室以防因電池顛倒而引起的電流不通。描繪電池正確的加載方向于電池室里，確保其無疑并不可磨滅）

(2)Design a battery chamber which other size batteries can not be inserted or connected.

         （設(shè)計的電池室應(yīng)無法嵌入或連接其它不同型號的電池）

(3)Design a battery chamber which is outgassed easily. （設(shè)計的電池室應(yīng)易通氣）

(4)Design a battery chamber preventing water entering.（設(shè)計的電池室應(yīng)防水）

(5)Add the feature of explosion protection to a battery chamber when it is sealed.

         （電池室密封時應(yīng)增加防爆功能的裝置）

(6)Set a battery chamber apart from heat source equipment.

          （設(shè)計的電池室應(yīng)遠(yuǎn)離熱源設(shè)備）

(7)Design a battery chamber which children can not pull out easily.

          （設(shè)計的電池室小孩應(yīng)不易拔出）

5. Interface and terminal （交界面和接線端）

(1)Make sufficient quality and shape for electric connection.

  （為電連接確保足夠的質(zhì)量和形狀）

(2)Design an attached circuit which prevents the batteries reversed.

         （設(shè)計附屬電路以防電池顛倒）

(3)Shape the battery preventing from being reversed.（設(shè)計電池形狀以防其被顛倒）

(4)Do not solder or weld to batteries directly.（切勿直接焊接電池）